Table 1.

Demographic and clinical characteristics of all participants.

	ADHD (n = 46)	HCs (n = 31)	P value
Age (years)	8.48 ± 1.89 (6–13)	8.84 ± 1.57 (6–12)	0.247a
Gender (M/F)	38/8	22/9	0.269b
IQ	119 (82–145)	120 (95–141)	0.531c
Hyperactivity index score	1.45 (0.4–2.8)	0.40 (0–1.5)	<0.001c
Impulsive score	1.54 ± 0.63 (0.5–3)	0.50 ± 0.48 (0–1.75)	<0.001a

Values are presented as mean ± standard (minimum − maximum) or median (minimum − maximum) depending on the normality.

ADHD, attention-deficit/hyperactivity disorder; HCs, healthy controls; M, male; F, female; IQ, intelligence quotient.

^aP-values were obtained using two-sample t-tests.

^bP-value was obtained using a chi-square test.

^cP-values were obtained using Wilcoxon rank sum tests.